This is nice, but I find it much less usable than GTMetrix: http://www.gtmetrix.com http://www.gtmetrix.com which runs both Google Page Speed and Yahoo YSlow.

This is nice, but I find it much less usable than GTMetrix: http://www.gtmetrix.com http://www.gtmetrix.com which runs both Google Page Speed and Yahoo YSlow. As an added bonus, GTMetrix also shows you the resource loading timeline.